Journal
ELECTROCHIMICA ACTA
Volume 177, Issue -, Pages 100-106Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.02.026
Keywords
Palladium; fuel cells; X-ray absorption (XAS); ethanol; electrocatalysis
Categories
Funding
- Ente Cassa di Risparmio di Firenze
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Deactivation is one the main causes still preventing the full exploitation of palladium electrocatalysts in alkaline direct alcohol fuel cells and the electrochemical reforming of alcohols. While often attributed to the adsorption of poisoning species generated in the alcohols oxidation, in the present work we demonstrate that deactivation is provoked by the formation of palladium oxides. A combined approach including i) fuel cell runs, ii) cyclic voltammetry and iii) near edge X-ray absorption spectroscopy has enabled us to draw the conclusions reported in the paper. (C) 2015 Elsevier Ltd. All rights reserved.
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